- to interpolate; interpose.
- to insert (an extra day, month, etc.) in the calendar.
Origin of intercalate
1605–15; < Latin intercalātus past participle of intercalāre to insert a day or month into the calendar, equivalent to inter- inter- + calā- (stem of calāre to proclaim) + -tus past participle suffix
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for intercalate
To prevent this it was customary at regular intervals to intercalate days or months.History of Astronomy
The present appears the fittest place in which to intercalate remarks concerning them.Luck or Cunning
So far it would suffice, in accounting for the facts, to intercalate between A and B a few terms, which would remain discrete.
The rule was to intercalate a day in every fourth year (quarto quoque anno).Plutarch's Lives Volume III.
- to insert (one or more days) into the calendar
- to interpolate or insert
C17: from Latin intercalāre to insert, proclaim that a day has been inserted, from inter- + calāre to proclaim
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for intercalate
Online Etymology Dictionary, © 2010 Douglas Harper